Since you mentioned talking...check out everyone's fav tech site: Anandtech's G Nex review.
AnandTech - Samsung Galaxy Nexus & Ice Cream Sandwich Review
I calculated the battery life tests...and it comes up woefully short for the Verizon G Nex. Just looking at talk time battery life alone is all you need to see. Wifi web browsing is a big difference too.
I mentioned this weeks ago cuz Anandtech put the G Nex on their Bench Tool before they did this review.
If you get a G nex, I would advise an extended battery. The RAZR MAXX will demolish it for battery life, even if the G Nex had an extended battery.
Also for the G Nex you would have to use custom kernels to help offset the battery life. The RAZR's battery life is nice...out the box.